Exemple #1
0
func (pow *Ethash) full(nonce uint64, miningHash []byte) []byte {
	cMiningHash := (*C.uint8_t)(unsafe.Pointer(&miningHash))
	cnonce := C.uint64_t(nonce)
	log.Println("seed hash, nonce:", miningHash, nonce)
	// pow.hash is the output/return of ethash_full
	C.ethash_full(pow.hash, pow.cache.mem, pow.params, cMiningHash, cnonce)
	ghash_full := C.GoBytes(unsafe.Pointer(pow.hash), 32)
	return ghash_full
}
Exemple #2
0
func (pow *Ethash) Search(block pow.Block, stop <-chan struct{}) []byte {
	//r := rand.New(rand.NewSource(time.Now().UnixNano()))
	miningHash := block.HashNoNonce()
	diff := block.Difficulty()
	//diff = big.NewInt(10000)
	log.Println("difficulty", diff)
	i := int64(0)
	start := time.Now().UnixNano()
	t := time.Now()

	nonce := uint64(0) //uint64(r.Int63())

	for {
		select {
		case <-stop:
			powlogger.Infoln("Breaking from mining")
			pow.HashRate = 0
			return nil
		default:
			i++

			if time.Since(t) > (1 * time.Second) {
				elapsed := time.Now().UnixNano() - start
				hashes := ((float64(1e9) / float64(elapsed)) * float64(i)) / 1000
				pow.HashRate = int64(hashes)
				powlogger.Infoln("Hashing @", pow.HashRate, "khash")

				t = time.Now()
			}

			cMiningHash := (*C.uint8_t)(unsafe.Pointer(&miningHash))
			cnonce := C.uint64_t(nonce)
			log.Println("seed hash, nonce:", miningHash, nonce)
			// pow.hash is the output/return of ethash_full
			C.ethash_full(pow.hash, pow.cache.mem, pow.params, cMiningHash, cnonce)
			ghash := C.GoBytes(unsafe.Pointer(pow.hash), 32)
			log.Println("ethhash full (on nonce):", ghash, nonce)

			if pow.verify(miningHash, diff, nonce) {
				return ghash
			}
			nonce += 1
		}

		if !pow.turbo {
			time.Sleep(20 * time.Microsecond)
		}
	}

	return nil
}